docs: def build(self, shutit):
  		"""Initializes target ready for build and updating package management if in container.
  		"""
  		if shutit.build['delivery'] in ('docker','dockerfile'):
  			if shutit.get_current_shutit_pexpect_session_environment().install_type == 'apt':
  				shutit.add_to_bashrc('export DEBIAN_FRONTEND=noninteractive')
  				if not shutit.command_available('lsb_release'):
  					shutit.install('lsb-release')
  				shutit.lsb_release()
  			elif shutit.get_current_shutit_pexpect_session_environment().install_type == 'yum':
  				# yum updates are so often "bad" that we let exit codes of 1 through.
  				# TODO: make this more sophisticated
  				shutit.send('yum update -y', timeout=9999, exit_values=['0', '1'])
  			shutit.pause_point('Anything you want to do to the target host ' + 'before the build starts?', level=2)
  		return True